Alright…now that you’ve been on this forum a few weeks and I’m starting to see a pattern, so I’m just going to ask this as food for thought…
Did you use the “Search” function on this thread before you posted that? I’m only asking because this thread is several pages long, so it’s very likely that these topics have already been covered. (I can speak for fighting against Ryu because we were discussing that Claw is Ryu’s worst nightmare at least 2 weeks ago.)
If anything, the ideal thing to do at this point is to search the thread for “Chun Li” or “Ryu”, read through those posts, implement them into your gameplay, and then, if you still have questions or you want to hear about anything new that people have come up with regarding those matchups, ask those questions. Please understand that I am only bringing this up to empower you…not to flame you. If you get better at using what’s already in front of you, you become resourceful. That translates to your gameplay becoming more resourceful.
Speaking of resources, you’ll also note that my name is on the last sticky post at the top of the forum. I highly encourage you to read that post. It’ll make your posting that much more effective and you won’t do things like post repetitive threads.
Now…with all of that said, lemme speak to the Ryu matchup. Cr.:mp: is your friend. St.:mk: is also your friend. At their maximum ranges, these two moves help you stuff Ryu’s Hadouken attempts before he can actually get it out. However, you want to hover right inside that range because if Ryu throws a Hadouken, you can jump it on reaction and land Claw’s standard j.:hp:/:hk:, cr.:mk:, cr.:mp: combo and either add a 3K Backflip for meter or start any number of mix-ups that lead to the one additional hit you need to dizzy him. Of course, jumping in reaction to a fake Hadouken will get you Shoryukened, so you still have to think here. Mixing in pokes to stuff Hadoukens is the way to go. From there, Ryu will start trying to play like Ken would and try for psychic DPs. Watch out for :lk: Hurricane Kicks, too. Again, mix it up. You easily have the speed advantage and can react to most of the stuff he can do.
DGV is on a whole 'nother level, though, so you best get to reading the thread and trying out that stuff first.
I’ll let someone else speak to fighting Chun Li.