Prop RPM and Torque

[south coast]

I would just like some opinions on this matter.

If your engine is developing max torque, (turbo-props) and you are not getting max prop rpm, would I be correct in saying that you will not be getting max thrust available?

Now, should your good engine and prop fail on take off, and having reduced rpm on the otherside, would this lead to reduced single engine climb performance?

I have my own ideas on this matter, but I would like to hear from others on this point before entering into a perhaps heated 'debate'.

Thanks....