Puppy playing rough 'n tough with my dog

There's a 5 m/o male lab mix in the park that always likes to play rough 'n tough with other dogs. He bites the ears, neck and lips, and if he manages to pin the other dog on its back, he presses his front paw against its neck.

Now, my dog is a 9 m/o male ECS mix who is quite dominant with adult males. If one puts his paw on his back, or starts posturing, my guy becomes very angry.

With this puppy on the other hand, he is extremely tolerant. He lets him bite to the point of yelping, without retaliation. But some times, if this goes too far, he feels he's had enough and starts growling and being dominant.

This lab puppy is the only dog which likes to play this way. My dog prefers to run and play chase, but the puppy sneaks up on him and so he can't avoid the wrestle.

My question is, could this rough 'n tough type of play be making my dog's dominance issue worse? Should I not let the two of them play together?

Adult dogs easily differentiate between a puppy and another adult and as a result tend to be much more tolerable of puppy antics. Essentially, the adult understands that the puppy is no real threat to his position. My puppy hangs off the neck and ears of one of my older dogs and has left some bite marks on her belly. When the older one tires of this, she will growl at him, take the occassional snap, or sometimes just walks away (or at least trys to).

I don't think any playing will make a dog's dominance issues worse, really. I mean eventually, your doggy will lose some wrestling matches as this Lab gets bigger. I say it's ok, but stop it when your doggy yelps, of course. :)

Glad it isn't something to worry about. And my dog is already losing the matches, except for when he gets mad. :p I'll have to interrupt them though when adult males are around, because sometimes they see him on his back and decide to gang up with the pup.