How hard a console is to program for is totally irrelavent really - and even if this did have an effect it would be likely that those that are simple to program for are going to be of poorer quality...everyone knows the dangers of RAD development right?
Look at the NES/N64 as two examples I have a knowledge of coding for (as a 'fun' excercise..never professionally) - they were NOT easy to program for..the NES was damn near to assembler that you had to know in terms of complexity (although it was a custom language created for the NES) and both those systems had a massive selection of great games...Harder to code for means only the best programmers can really do it, which is only a good thing
Who wants lots of games released by the likes of JoWood? not me