RE:T.GUD vs V.NPH vs V.RX ......Not sure what you're trying to suggest with this post but GUD has a whole pile of cash that they received from selling the "early FDA approval" ticket to Gilead; hence the high market cap number in relation to their EPS. This was the carrot that Goodman was able to take with him after the Paladin sale to Endo. Don't get me wrong, I really like Knight but there's no way they are similarly structured as RX an this point. GUD just doesn't have the recurring revs that RX has... yet. They are more like a venture capital hedge fund type set up... whereas RX has a stable of drugs and different business model.
I can't comment on MPH because I'm just not that familiar with the company.
To suggest that RX and MPH be valued similarly to GUD because they have higher EPS isn't quite accurate. GUD has WAY more cash on hand than those two.
As someone said in an earlier post, if you're looking for a high flying stock that you can double your money in short order, this isn't the company/stock for you. But if you have a long term horizon and you don't mind your capital compounding at 20%/year then RX is an excellent option. Cheers.