haven't watched much ascension, so is he actually that big of an upgrade cause stats are not incredible but of course there many other factors for choosing an igl
I think the main reason that johnqt is a good pick for SEN is mostly 1. he was m80 igl (they were a really good team) 2. He plays sentinel (fixes role issues) 3. He plays his role pretty well as an anchoring sentinel
also during ascension his stats might not have been great. but check his stats from NA challengers, he put up really good numbers