Heist and HighSpeedChase 2 are different games, we had some ideas for the HSC engine that didn't fit inside what HSC2 is meant to be so we made a spin-off game. It's actually really awesome, very pick-up-and-play but with elements of upgrade and a mission structure to keep more dedicated players interested for longer.
For example, in the Heist you'll be able to employ new gang members to complete harder jobs that will earn you more money. Obviously, gang members come at a price and will want there own cut of the stolen money so it's about balance and skill to make the top spots on the leaderboard.
HighSpeedChase 2 is all about targets (like the current version), but this time you can collect pickups as shown in the early promotional video.
Guns like Pistol and Uzi are what you'll come across in terms of out-of-the-window weaponry. You'll also be able to collect boost, slow motion and health pickups.
We've decided to include a number of sub-objectives in HSC2 dedicated to earning medals, this means you can come back to the game with fresh objectives so mainstream gameplay has a good longetivity.
So, The Heist is more of a mission based game and HighSpeedChase2 borrows a lot from arcade style games where you just want to be thrown into the action and get some awesome medals along the way. Both games also have different graphics styles so they will look like different games too, even though they're based on the same game engine.
Any questions?