This is the kind of topic I love most - comparison. Ok, being a non-skating fan who has watched millions of Michelle's performances and some of Kristi's, allow me to offer my personal opinion (strictly from a sports analyst's point of view). I rely very much on probability which makes sense, in any sport, that's how bookmakers determine the odds.
Let's take a look at 2 types of comparison here, MK vs Kristi in general and MK's best vs Krsiti's best.
1) Michelle vs Kristi in general.
Let's say Kristi had extended her amateur career to 10 years to match Michelle's for better comparison. I'd go with Michelle. Technically, I'd give it to Michelle despite Kristi's much more difficult 3z/3t. Why? Let's look at probability. How many times had Kristi landed that combo from 89-92? How many times had she landed 6+ triples? What's the probability of Kristi landing the dreaded 3S? Very very low. She'd have had to deal with Michelle who has landed 41 6+ triples (with or without 3/3) in a span of 10 years! That's 4 per year! I talk about triples only because this is the only element I'm familiar with and it's also the most important determining factor for the technical marks, all others being close or equal. As for other technical elements (which I have too little knowledge to compare), some posters have already given the edge to Michelle.
As for presentation, it's highly subjective. However, this is what has helped Michelle win many many major competitions and fend off rather successfully from the likes of Tara, Irina, Sarah and Sasha. There's no doubt here that the judges have loved Michelle's presentation. With this, I'd go with Michelle, Kristi was great in presentation notwithstanding. It would be close.
Lastly, what is the probability of
a) Michelle delivering clean LPs that are close to perfection in both technique and presentation compared to Kristi?
b) Michelle delivering back-to-back clean SP and LP compared to Kristi?
For both a and b, it's definitely Michelle. Hence, overall in this category MK vs Kristi in general, it's Michelle the better skater.
2) Best vs Best
It's very difficult to have a situation of best vs best simply because the probability of Michelle of delivering her perfect performance is much higher than Kristi. Let's do it for hypothetical purpose.
Ok this is tough to determine. Kristi's best would have 7 triples with 3z/3t and excellent presentation. Michelle, 7 triples with 3t/3t with excellent presentation + turning the house into complete madness. Tough call, but since I have to take a pick, it'd be Michelle again but with a 5/4 split. You can say I'm biased here.
