The bad news is that the MIDI I downloaded (Solace) is not useable as piano music. The times are all whopperjawed. The MIDI's are probably all that way.
The problem could be that if the MIDIs were written to exact music notation times. they might not sound as good. It's also possible that the MIDI's were "recorded" using a real human piano player.
I've said this before but MIDI is not really a notation format - one could say it is a "performance" format, capable of representing the timings real players might use (including the fact we are not usualy spot on accurate to a note) when interpeting a score rather more accurately than sheet music can.