John Schmidt's views (as of 2009) on the relative difficulty of 14.1 on 7-, 8-, and 9-footers:
... for the record i think 14.1 on the bartable is easier than 9ft.
you can reach allbreakballs,combos and shots are a joke etc.
yes its more confined space but with the cueball control ive learned from 14.1 thats the last thing im worried about.
for the record the easiest table to play 14.1 is a 4x8 .ive played on them all and its the easiest no doubt. enough room to play but still easier on shotmaking,reaching,combos than 9ft.