If you rest spammed (or abused Wish) and had spells galore for every fight then yeah sure.
Why wouldn't you rest when needed though? It's not like you got a lot of punishment for doing so apart from the occasional rest encounter.
BG series on the whole didn't really have tanks, it's a bullshit MMO concept that unfortunately crawled its way into single player RPGs. Fighters had plenty of health and were hard to hit (excluding special cases like Kensai kit) but they were monsters in melee that could deal a ton of damage not immovable walls that glued up enemies and then tickled them while the rest of the party did the killing.
There were no mmorpg-like taunts but the tank was just the guy you'd put in front, you'd tank through positioning. According to party stats my fighter in PoE is dealing some pretty heavy damage as well though so that's not really that different. He's not just some wow-like meatshield.
Rangers get useful later on because they can cast some useful low level Priest self-buffs (like Armor of Faith) which make them better in combat, they also have kits like Stalker which is great (a Fighter/Thief almost with better THAC0 progression and more HP) and Archer which is the best ranged combat class.
Unless you're actively gimping yourself by e.g. avoiding rest meta-gaming wise casting that Armor of Faith won't make a lot of difference.
PST combat only had a superficial similarity to BG2 and is overall by far the worst part of the game, don't see how it proves anything in regards to BG2 combat and systems.
It's exactly the same system at its core, just with some less fancy icing on the cake making PS:T objectively worse combat-wise but not in a way they play fundamentally different.
Sawyers system is deeply flawed but this sudden hype of AD&D 2nd edition suggests nostalgia goggles much.