Those are not really measurable qualities of a rifle per se, but I can comment as far as my MV goes anyways...
~750 rounds in on mine, zero issues. Shot with Pmags, LAR, ATRS and beo's. Shot 350 rounds in the desert at Surefire with no cleaning or maintenance of any kind. Got it so hot it was uncomfortable to hold the hand guard (gotta love regular capacity mags) with no noticeable degradation in function or accuracy. As far as I am concerned it will basically operate/last the same as any other DI AR-15 type rifle.
What caused the AR's in question to explode in your face? Hardly fair to blame a rifle for bad mags, overcharged rounds, lack of maintenance etc...