Conversion Tracking for Rating LP

I’m rating 5 products on a LP, but it’s near impossible to get all 5 merchants to setup conversion tracking for me. So my question is: From past experience with these sorts of LP’s, do you find that mostly only the top product converts, or say the top two?
I’ve never had a LP like this (always done AM contextually) so I’m not sure what converts generally.

See original post by lapsaJ