It has been a while since i have played bjt it is closer in mechanics to start. It uses a real time time with pause system and parties of 6, so a lot of thr combat dynamics and tactics are similar as are the controls. As for the difficulty, it can be difficult but there are 6 difficulty settings so dont feel obligated to play in a hardcore difficulty. The character building can get pretty complex but that is a perk for me, and it does a very good job giving you all the information, altho it can be overwhelming at times, it is actually there so you can plan accordingly ( one of my big issues with bg3 is the lack of info in tooltips etc). Also, there is an ingame respec option so you arent locked in.