I think Manfredy had some qualities that would trouble Mancini. He had good balance, was good at blocking and short with his punches - not quite Bramble, but somewhat similar. On the other hand - I don't think Angel quite had the durability or fitness of prime Bramble, so I think Mancini would be able to make a dent in him and break him down. Mancini in second half stoppage - but in good fight, with Manfredy having some good rounds too and showing himself well.
Mancini prior to the Kim fight would be much to strong ,aggressive, and with great endurance for Manfredy, stops him with in 8rds . After the Kim fight? A closer fight, but I still like Mancini to out work and beat Manfredy.
Manfredy is quite good actually underrated, i know @scartissue is quite high on Manfredy like me. Hes bit like Greg Haugen with counter punching, but much more exciting to watch. I think this is a very competitive fight, Manfredy did well against aggressive fighters like Gatti, Robinson, Rodriguez, Paez, etc. Overall i'd slightly favour Mancini but this is actually alot more competitive than people think.