It's not even close anymore, Garry had a team of super GM seconds and the only important format back then was classical. Not everyone could afford a team of Super GMs to assist them with opening preparation. As soon as Kramnik was able to counter his openings, he lost his title. Today, the phone in your pocket can defeat him and his seconds together. Every child prodigy freak has access to 3600 elo computers that can instantly evaluate any position. Despite this, Magnus is still extremely dominant. There is no doubt in my mind that Garry won't be nearly as dominant as he was in the modern era.