When Govinda was in top form, he was the better entertainer than any of the Khans, Deols, Kumars & Kapoors..
The moment he got lazier & completely typecasted, others got a chance to make it big even in the genres where Govinda was at his best.
Comparing, Govinda & Salman Khan now will not be fair for Govinda. But the moment Govinda's is acting in his favorite genre "comedy", you will know what kinda "master" he is in that roles. Partner is the best example to see how he dominated Salman Khan where Salman was only left with his style & charisma to match Govinda.
Serious dramatic roles is something Govinda hasn't been utilized well post 2000 for the new generation kids to know his worth. But the 90's generation, knowing Govinda's worth as an actor is far more justified, be it his gazillion comedy films to his serious action dramas to even family dramas like Swarg.
Currently, you know Salman is bigger & as he entertains far more bigger crowd, he'll look as a better entertainer. Analyzing based on current times will be unfair to Govinda.
Overall, Salman Khan himself has been inspired by Govinda in his journey towards achieving super stardom. Govinda made a mess of it post 1998, Salman has reached new heights to become one of the biggest megastars in the country (all languages industries combined). But Govinda has always been a better actor.. afterall he entered in an era where he has gained experience from the likes of the real legends of Hindi cinema.