Um, you might want to check on that. ;) If I understand it correctly (and I very easily may not)... You power level doesn't really matter on the PvE side. When an Invader comes in, you will do less damage to a higher power invader, but (supposedly) he will do no extra damage to you. In other words, don't go 'toe to toe' with an invader. If you decide to invade and you are 30 levels lower than the opposition... R.I.P. Some of that info could be wrong and I'm trying to find confirmation, but suffice it to say that when you hover over Prime in the map, it states that power levels are enabled. Edit... According to https://www.bungie.net/en/Help/Article/47122 They simply say "Gambit is only "power-enabled" when facing off against an invader during a Gambit match" That tells me that the info I gave about an invader not doing more damage would be incorrect. :)