I don't know - i've said it before, and i'll say it again. At the Time when Ber/Sikh, Sale/Pell and Shen/Zhao were all competing Shen/Zhao did not have the presentation skills (or even the excellent pair skills) to compete with B/S and S/P. Shen/Zhao did, however, start working immensely on their presentation, artistry and choreography and became much stronger in these areas and along with it came that excellent unison. Shen/Zhao of now would have given Ber/Sikh and Sale/Pell of then a good run for their money, but i think, that i'd still give the nod to the Russians and Canadians.
Well it sounds as if you are saying for half of Shen/Zhou's career as a top pair you concede they could not really rival Berezhnaya/Sikhardlidze or Sale/Pelletier, and for the other half they would be very close with them but still giving the slight edge to Berezhnaya/Sikhardlidze and Sale/Pelletier. Does not sound like you are really refuting that those 2 pairs are the greatest pairs of the last decade just as I said.
I think there is a world of difference between Shen/Zhao and Tot/Mar. Tot/Mar could have had any music playing in the background and it wouldn not have made any difference to the way they skated. They were a very technical proficient team, with good unison and great elements (except the awful death spirals and usual crashy russian slpit twist). What they lacked was any musicality, meaningful choreography or seemingly any chemistry on the ice.
I agree with you on the triple twist of Totmianina/Marinin but not at all on the death spirals. They have excellent death spirals, some of the best, and the judges feel that way too as they give them some of the highest GOE on them and they are level 4 value. IMO they have better death spirals then Shen/Zhou despite that Shen/Zhou have good death spirals.
I agree with you on their lacking chemistry on the ice, or magic on the ice. I dont agree with you at all on musicality or choreography. Their programs were extremely well choreographed and their movements and skating very in time and reflective of the music.
Shen/Zhou have their relative weaknesses by comparision too. They are nowhere near as polished in terms of lines or positions even today as Sale/
Pelletier, Berezhnaya/Sikharlidze, or even Totmianina/Marinin. The free leg extensions are still a bit sloppy alot of times. Their unision and matching movements is also beaten convincingly by a team like Totmianina/Marinin. Their spins are much much weaker then a team like Totmianina/Marinin as well. His throw technique is also not particularly strong, the way he almost hops of the ice after he launches her, the result of what happens with her is spectacular but his technique is not that strong.
Shen/Zhao were plagued with injuries in the last quadrennial and Tot/Mar took advantage of that whenever they could. If (and i know that's a big if) Shen/Zhao had been 100% fit and healthy and competing at those competitions i don't think Tot/Mar woudl ahve had the same number of titles, and i think that Shen/Zhao would have had that godl in Torino too.
Totmianina/Marinin and Shen/Zhou completed together for 2 full seasons fully healthy starting the season after the 2002 Olympic season. Here were the results:
2003 GP-Totmianina/Marinin over Shen/Zhou. Totmianina/Marinin won all 3 programs over Shen/Zhou
2003 Worlds-Shen/Zhou over Totmianina/Marinin. Totmianina/Marinin won the short program. Shen/Zhou won the free program to win the title.
2003 Skate Canada-Totmianina/Marinin over Shen/Zhou. Shen/Zhou won the short program. Totmianina/Marinin won the fre program to win the title.
2004 GP final-Shen/Zhou over Totmianina/Marinin. Shen/Zhou won the short and free program to win the title.
2004 Worlds-Totmianina/Marinin over Shen/Zhou. Totmianina/Marinin won the short program, Shen/Zhou won the free program but could not catch up overall.
No domination there that I see from either team. Totmianina/Marinin were real rivals and threats to Shen/Zhou even when they were fully healthy, coping with no injuries.
I could easily say Shen/Zhou also took advantage of periods Totmianina/Marinin were injured or away since either team cruised to titles when the other was absent or not 100% since teams like Pang/Tong, Petrova/Tikhonov, Zhang/Zhang are not even in the same league as either Shen/Zhou or Totmianina
/Marinin. Totmianina/Marinin had it easy between the 2005 Worlds-2006 Olympics with Shen/Zhou either dealing with injuries or absent? Well Shen/Zhou also had it easy during the 2005 GP season with Totmianin/Marinin out from their serious accident at Skate America. Shen/Zhou also had it easy this season with Totmianina/Marinin gone, who was their big competition left-
Pang/Tong, Zhang/Zhang, Savchenko/Szokoly? When Totmianina/Marinin have been away Shen/Zhou have pretty much joke competition as well.
Look at the Olympics, Totmianina/Marinin winning by 15 points over 2nd place. Then look at this years Worlds, Shen/Zhou winning by 16 points over 2nd place. It is the same for both teams, when the other one is absent or not 100% they each romp to titles with no real competition there for them. Their PB scores under COP are extremely similar I would add.