You may say he got stomped by Kin and Gin or killed by 20 fodders. There's more to those stories. With dense chakra from what we've seen. (It would've been unwise for tobirama to do the same as hashi because that would collapse the shrine) He could've broke Orochimaru's control until the latter used his brother's cells. Took down Izuna who had the MS and with all MS. they possess powerful abilities as you know. From what battles we have seen the more confident ones more times than not win. Maybe I will get criticism but it's easier to deal with than sakura threads. I mean she's just a fictional character!?