I don't think that Cunningham's right hand would be better Wlad's but I think that due to him being considerably shorter than Fury he could surprise him with that looping shot coming from down under unlike Wlad.
There's truth in both opinion, one of them is that Fury improved since Cunningham and/or he fights up to the level of his competition and that Wlad didn't throw enough punches at him cause he was conditioned to fight super safe for year because his early KO losses. Pre-prime aggressive Wlad might KO Fury or he gets KOd.
Wilder starts cautious too he usually doesn't start to throw bombs straight from round 1, he needs some rounds before he gets going against better opponents but I also doubt he would keep being cautious if he would be tracking on the cards.
Can't wait for this fight and Stevenson vs Gvozdyk too.