Don't think we'll see Wheeler again any time soon, though meant to mention that, as he's often been described as the left-arm Matt Henry, it's no great surprise he's not a success in T20s. He wouldn't be at the death in ODIs either. Likes bowling back of a length in limited-overs cricket to get awkward bounce, a little swing and seam and can be a challenging new ball bowler as a result. He probably has success with that back-of-a-length tactic domestically even in T20s (though his numbers aren't great), particularly now he bowls high 130s instead of low. However it's not a goer on super-flat wickets against the best biffers in the world. You just cannot bowl predictable seam-up balls on a good length or back of a length. That got murdered so he tried to fall back on other options.
Like Henry, he has no good slower ball let alone several variations of it. I wonder if that front-on action makes it harder for him to master slower deliveries. Whatever the reason, both he and Henry are really lacking there.
He can bowl a good yorker, but this also wasn't the first time he repeatedly failed to land it anywhere near on target. There were two consecutive NZ matches he played a while ago where he tried to bowl wide yorkers, kept missing and conceded a load of wides. He's just not very accurate with those and that's before even considering the mental side of bowling in those situations.
Back to being reserve left arm swing bowler in case Boult misses a test, I'm afraid.