Mowie,

 Don't think the language is an issue.

  First question how are calculating the small signal equivalent circuit for
your transistors? From reading your post, it is not clear how these are
being calculated. As process scale, it is no longer to appropriate to hand
calculate the transistors equivalent circuit. You should use the values in
the dc operating point information.

  Next question, how are you constructing your testbenches? Are you
using an ideal current source or transistor current source to bias the
follower? The more realistic the testbench the higher order the analysis
you will need to do.

  From personal experience, hand calculations will not exactly match
simulated results and the understanding the difference in the results
can teach you a lot about the circuit (and how dangerous simplifying
approximations can be).

                                                          Best Regards,

                                                            Sheldon