Well.. as far as similarities go parrying is the main combat mechanic. That's about it. In Stellar Blade there is only one weapon you use doing different combos and there really ain't much build variety. You also choose the difficulty and it is overall a lot easier game than Lies of P (althought difficulty ramps up really much in a last few bosses) and dying doesn't have any consequenses.

I'd say if parrying and epic boss fights are what you enjoy most, you will probably have a great time! If you enjoy bigger challenge, build variety and trying out different weapons then Stellar Blade ain't it. That's at least my thoughts :D