Been playing with Abel, here's some help:

Tornado Throw has priority over any normal throw, so if you're not playing with a grappler get out of there.

Ex tornado throw I believe has priority over normal moves and throws so, get out of there.

His change of direction chain has to be blocked standing. (the one that combos) If you are blocking low for the last 2 hits you will still get thrown.

Finally, the Breathless ultra is probably the best ultra on the game. It is unblockable, quick, travels instantly almost full screen, you can hold the button to delay it, you can cancel it, and it has one hit armor. It also takes about half life. You shouldn't jump at an Abel with ultra unless you cross him up, and don't miss a special move close to him or you're toast. Best to try to bait it out by jumping repeatedly from a distance.

Just started playing with him in the last two weeks for all the above reasons.