I had to say it.
1st bold = BS reasoning
2nd bold = you're talking pure BS now, no back up for any of that, cite some manga pages please
3rd bold = yeah, sure, got his arse kicked by 20 no-named fodders
Your whole argument is flawed. Not to mention that this guy's Edo Tensei is by far the weakest. He could have been reviving people without their original abilities for all we know.
In any case, we don't have enough info to make a conclusion, however, from what we know Hashirama > Tobirama without a doubt. As I said, if you think otherwise, slap yourself, and stop reading Naruto.