The compact and bulky design of the bull pup inhibits air cooling, and causes the Tavor to overheat faster than a typical M4 would in the same circumstances.
That and every bull pup has a brutal trigger compared to what you can get in a base model M4.
Personally, and this is just a preference thing from running an AR for decades, but I dont love change mags close to the chest where I cant see it, compared to up at eye level.
I have fired both in full auto extensively. Both seemed to get hot fast. Dumping mags semi-auto up here in Canada I can say the same. I can definitely agree that stock triggers are very different but the X-95 is hardly so bad it can't compare. I have one set up with full Geiselle upgrades and one without. They both shoot pretty well the same for me running drills. Again I would base my choice off what I expected. Compact weapons can be worth their weight in gold. Realistically though the M4 isn't overly long... I'm clearly unable to decide myself haha.