(I had a quick look 5 tabs deep in the closed suggestions and didn't see a thread relating to this, although I have seen it mentioned in passing on the forums somewhere)
I have one lvl21 character, and am currently levelling a second, better balanced character who is lvl14 right now. Levelling predominantly through the PvE random encounters.
So far, my experience of PvP (all be it just in interrupted random encounters) has been of one turn kills. It is more than a little frustrating to be killed without having an opportunity to make any decision that will effect the outcome of the battle. It is simply a case of who gets the first turn, and whether that person shoots or walks off. It is also frustrating to be forced into shooting another player simply because if you don't, he can easily immediately kill you, again without the opportunity to react to such agression.
I would consider it a more engaging process if HP levels were greater, or weapon damage smaller, so that it might take more than one turn to kill a player. It should provide the opportunity to actually use stims or to find cover, to swap to a more appropriate weapon/ammo type for the environment etc. Ultimately good combat mechanics should give you the opportunity to influence the outcome of the battle through choices, and this is not something I am seeing right now in FOnline.
Perhaps TC is different, where you go well prepared, with friends, and stay in strategically safe places. But out in the wild, in solo play, there seems to be no actual combat, certainly nothing sophisticated or challenging.
Surely it is not good gameplay to be watching your character die (especially with the consequences of death in FOnline) without having any opportunity to influence it.