Acrosurge
Lumine Infinitus
This thread is kind of silly. Therefore, I will post here! 😄
Thanos should defeat Flash simply 10 times out of 10 battles. Really, I see no possible way for Flash to gain even one win. Yes, Flash can surpass lightspeed. Yes, Flash can vibrate through matter. Yes, Flash can steal kinetic energy. Yes, Flash can dump things in the speed force. The fact is, however, he cannot do any of these things to Thanos. Why? Thanos's control over his own matter and energies is too great, not to mention his control over vast quantities of the power cosmic. I wouldn't put it past him to siphon or sever Wally's connection with the speed force, if he takes some in-battle-time to study Wally in operation.
And now a short interlude to discuss Flash's recent Identity Crisis battle against Deathstroke. Remember Deathstroke? The near metahuman? Did Deathstroke get dumped in the speedforce? No. Did Flash vibrate through him? No. Did Slade get speed blitzed? No. Did Flash steal his speed? No. What happened?
Deathstroke impaled Flash with a sword. Flash may have outrun Death, but it appears that a near-meta was too much for him.
End of interlude. If Slade with his better-than human reflexes can tag Flash (and he's not alone. Dozens of villains without lightspeed reflexes have managed to hit Flash) then it should be childsplay for Thanos with his godlike reflexes.