I'm sure older posters will have their own thoughts, but in my opinion, that's one of the most impressive debuts I can remember in my 25 years of watching the sport. Outstanding.
Off the top of my head - Alesi and Schumacher were incredible.
I am sure I am missing more but those two were well above Bearman. As others have mentioned - I would have been disapointed had he finished further back.
But he kept it out of trouble and had a decent race - nothing to light the world on fire IMO.