No, the one who is overrating tobirama is you.
A:His suiton is irrelevant in this match, as susanoo tanks each and every attack. And btw-Enton>Suiton
B: I don't give a shit about how much experience he has fighting uchihas. Most them would only have 3 tomoe(besides Izuna, but we don't even know if he fought Izuna directly. All we saw was him landing the killing blow.For all we know, he caught Izuna off guard of something). Aside from Madara(who we never saw him engage directly 1 on 1) I doubt any of them were as strong as current Sasuke.
C: Sasuke's intellectual feats speak for themselves. The way he fought against Deidara proves it. Furthermore, he completely fooled Danzo at the end of their fight.(A shinobi "more experienced" than Sasuke)
D: Up until now, FTG,Shadow Clones and Edo Tensei are his most powerful techniques. We can't just assume he has other powerful techniques until he shows them. Like I said, Sasuke with a v4 susanoo wins mid diff as he tanks all of Tobirama's attacks and overwhelms him with enton. Hell, he could just summon his hawk and get out of range of tobiramas attacks and destroy him from there.