Excellent catch. Tua made a living in college off of single reads and predetermined throws (the five yard slant across the middle, for example) which allow for less processing time and and require anticipation and timing. Most of these passes are also short, requiring a very quick throw so the pass makes it in time to hit the receiver in stride. Tua was VERY good at this part of the game and it really helped mitigate a lot of the arm strength issues he has. Marino had arm strength by the boatload and held the football long enough to get his receivers in space, and then would initiate the quick release for deep passes.
I think we are comparing two very different skill sets here. If Tua truly does have a Marino like quick release, that is a good thing, but it is worth mentioning that Dan has been quoted as saying arm strength is the most important attribute of a great QB. While he did take pride in his quick release, it was his arm strength and elusiveness in the pocket he placed the most value on.