There has been the thought in the Russians threads that the 4Lo gets attempted more often by Russian men - indeed they like to go for it. Why is not so clear. The 4Lz is also popular. Hardly anybody does the 4F. Does that mean the 4F is more difficult? Maybe. There is almost nobody who is able to jump it with clean technique. But then I would think that's also because if you train for either 4Lz or 4F and they are roughly equally difficult, you will go for Lz because it's worth slightly more. So maybe they are just equally difficult? As a non-top skater, ehem, I can't say.
Could also be that the 4Lz is, in theory, more difficult, but, for those who are already extremely good at high rotation, it's easier.
Could be that certain coaching techniques favour certain jumps while the jump itself is not harder or easier in general.
The 4F was attempted more than the 4Lo until the 2021-22 season, but for whatever reason the 4Lo has become the more popular choice.
2020-1
4F: 42 attempts, 12 skaters, 3 Russians, 16 attempts (Mozalev, Shcherbakova, Trusova)
4Lo: 28 attempts, 8 skaters, 4 Russians, 14 attempts (Ignatov, Samodelkina, KSarnovskiy, Semenenko)
2021-2
4F: 55 attempts, 12 skaters, 6 Russians, 15 attempts, (Lazarev, Samarin, Shcherbakova, Shesternev, Trusova, Zavodskikh)
4Lo: 61 attemps, 15 skaters, 8 Russians, 37 attempts (Anisimov, Erokhov, Gumennik, Ignatov, Morozova, Petrosyan, Prineva, Yablokov)
2022-3
4F: 35 attempts, 10 skaters, 4 Russians, 10 attempts (Anisimov, Petrosyan, Prineva, Ugozhaev)
4Lo: 71 attempts, 14 skaters, 8 Russians, 38 attempts (Anisimov, Erokhov, Gumennik, Ignatov, Lutfullin, Petrosyan, Rubtsova, Yablokov)
2023-4 fall
4F: 31 attempts, 10 skaters, 5 Russians, 10 attempts (Anisimov, Fedorov, Petrosyan, Popov, Ugozhaev)
4Lo: 48 attempts, 15 skaters, 7 Russians, 33 attempts (Gumennik, Ignatov, Lutfullin, Semenenko, Vetlugin, Yablokov, Zonov)
Interestingly enough, there are no huge changes in percentages of Russians and their attempts. Maybe a little higher with the 4Lo this fall, but remains to be seen what the numbers are at the end of the season.
I don't think the popularity of the 4Lz can be explained by its high BV - I mean, you also have to think about the negative effects. It is more likely to get a low score for almost any quad and for many, the triple could bring in more points as they might be more consistent.
Think of say Jason Brown or Rion Sumiyoshi who kept/keep on trying quads and getting < and << on a regular basis, the point score they get is lower than what they would get for the triple. Rion's average score for her 15 bad 4T attempts is 3,56 which is lower than the BV for a 3T. The same applies to bad 4Lz attempts.
There are a number of not that great jumpers who have kept on/are doing the 4Lz, sometimes even as their main jump. Say Larry Loupolover or among the current Russian novice girls Alena Prineva. Or even Daniel Grassl who has dabbled with 4Lo, 4F and 4Lz but has never even tried the easier ones. And even Anna Shcherbakova whose triples made me always feel amazed that she could actually do a relatively good quad.
4Lz is also the most common third quad to conquer for quadsters with multiple quad types (like Nathan or Ilia). Ilia even got the 4A down before he attempted the 4Lo...
ADD: 55 skaters have attempted 3 or more different quads in competition and this is what the jumps are and with which they have gotten 0,00 or positive GOEs:
| 4T | 4S | 4Lo | 4F | 4Lz | 4A |
| Attempted | 51 | 46 | 28 | 23 | 35 | 3 |
| GOE+ | 49 | 39 | 18 | 12 | 25 | 1 |
| Success% | 96,1 | 84,8 | 64,3 | 52,2 | 71,4 | 33,3 |
The motivations for attempting jumps when you're not necessarily as good at it as Nathan, Yuzuru or Ilia, are various. I particularly loved Nikolaj Memola's reasoning for choosing the 4Lz over the 4T - he is very tall and so the Lutz looks better for him than the 4T! Grassl said (IIRC) that he thought the 4T and 4S were too easy. The glory of getting it right once is also a possibility - think of eg Brandon Mroz who somehow nabbed the first landed 4Lz when otherwise his track record with 41 quads is not that great (he only got positive GOE for 8 4Ts in addition to that 4Lz).