Sasuke no longer has wings to propel himself in midair so neither he nor Asuma can reach Deidara. He also no longer has shadow snake arms to boost his ability to avoid attacks by
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. He could utilise snake summons to gain a height advantage though but he never used them against Deidara in the first place. I guess with Asuma as a distraction and Sasuke there to diffuse any of Deidara's bombs, they could potentially take Deidara but Sasuke needs to learn of Deidara's weakness first. Asuma may end up hindering Sasuke though since he lacks raiton, sharingan and Sasuke's level of speed so he may become a liability or an annoyance.
I'll give it to Deidara high difficulty.
Having said this, I do believe that early Shippuden Sasuke will have a stamina advantage over Hebi Sasuke since some of Hebi Sasuke's chakra was suppressing Oro's chakra.
