I wouldn't classify this same as the Legendary edition. It's the collection of 3 games back on the 360/PS3. Ultimately, it's probably the same game content, but not the same graphical enhancements and whatever other changes they made.
It would be standalone if the game are remakes, here they are just graphical enhancements. Does not warrant a 2nd entry, and that would be another one clogging up the charts.
Ultimately, it's probably the same game content, but not the same graphical enhancements and whatever other changes they made.