H&G is the most pay to win game I've ever had the chance to play. Purchase bullets, barrels, bolts and triggers all designed to give you the edge over other players - I loathed it. For example - shooting someone at 400m twice - lining up a third and then getting one shoted because he (or she) had paid for better ammo, it was painful at times. Also - it advertised itself a good bit as an mmorpg - imo 10 vs 10 servers don't really count as mmorpg (yes I know the servers held more - but rarely did I see a full one)
War Thunder, feels similar - as when I played it - it was just crawling with people purchasing the best air craft they could - felt very unbalanced and I had some poor experiences with the community also
Also - I've played much better flight sims.
Whilst both are exceptionally pretty, I rate neither too high so far as gameplay goes, nothing spectacular from either. If you need closure I'd prefer to play war thunder but would likely not pick up either ever again
Anyway, all opinion and that jazz