The wrong question keeps getting asked.
It is not how good could these two be and/or are.
It is "does the trade make the team better now and give them a better chance to get past the Heat?"
If the answer is "NO", don't make the move.
If the answer is "YES", make the move.
I think this is the first question. If the answer is Yes, I think you make the move. If the answer is no, then you need to go on to question 2.
"Does this move give the team a better chance to remain competitive in the long-term?"
If the answer for that is Yes, then you still make the move IMO.
I think there could be moves that might not put this team over the top this year, but give us a building block perhaps better than the young guy we are trading. I don't think its likely, because I think both of those guys values are not nearly as high as others think...but you never know if a GM would fall in love with one of them.