Because not all feedbacks are equal. If you go to my trust page, all the feedback is for small amounts. However, I have also done trades with hundreds of dollars on other platforms, so naturally those feedbacks would matter more to someone trying to buy/sell some product from me in Marketplace.
edit: I was thinking, why don't I link to those sites directly in my feedback using
my bot account?
I have to admit I felt a little strange when I saw this thread. Now I'll ask you the same question, why do you even need something like that?
First, it will be quite difficult to prove that the same person is behind all the accounts. Even if there is a trade that requires confirmation that the accounts are yours, it could take too long and complicate things.
The imported feedback will not mean much more than the current ones you have, I would even have more trust in the current ones because they were left by other users who also have a high trust rating here. Many of us here do not use Paxful and know little about the feedback system there and whether it is possible to manipulate it. Guarantees from other sites are mostly rejected here for loan requests. You would continue to be looked at through your Bitcointalk history.
As for the feedback on your profile, perhaps your history of posts is much more relevant, that is, your behaviour and the way you approach different discussions here. I will mention the most extreme example, for some trades with LoyceV, probably no one would even look at his feedback page, no matter what was written there.