UMVC3 brought a change to the throw teching system - now you can tech throws during the recovery of any move. This change makes some teleport offenses safer than normal, makes throw-only punishable moves unpunishable, and in general I think its just a silly mechanic.
In vanilla, if you see a Wesker do an H teleport on the ground, you’d normally just jump up and air throw him, or anti air him if you had an amazing anti air. Now, he can just OS throw tech during his amazing priority j.S, making that option much more viable for continuing pressure. Same with Dante - no respectable Dante would ever do raw teleport without some sort of blockstring, but now, it is a lot harder to punish something like stinger>BC teleport if he OS throw techs during j.H/j.M.
Then you have chars with moves that require throws to punish. Examples include Ryu’ L tatsu, Wolverine’s Divekick at a certain height, Dante’s Killer bee, and more. Also, say you’re fighting against Doom and he’s using Missiles/Sphere flame - unless you have something that negates the missiles such as a cinematic or large AoE super, you can’t do anything about it but respect it in ultimate.
And of course, instead of having one chance to tech air throws - just mash on throw tech when you think its coming. I really have no idea why this change to the system was implemented, and think it needs to be removed.