Not necessarily. It depends on how the 2 lines are differentiated. Back in 2004 the iBooks had the Radeon 9200 w/32vram vs the Powerbooks Radeon 9700 w/64vram. The radeon 9700 was a decent card the 9200 was not. The Powerbooks had more ram expansion, faster cpus, etc., etc.
Faster bus speeds, faster cpu, more expansion slots, backlit keyboard, better & larger screens, ability to support larger external monitors, very large HD options for pros, and better graphics chips are ways of seperating a pro line from the consumer line. Apple has done it in the past. What it comes down to now imho is whatever deal they have with Intel and profit margins. Intel wants to dominate the integrated graphics market, and Apple wants fat profit margins. This is probably the deciding factors.
I'd be ok with a low end card in a macbook, but I want a 15.4 inch screen because of my lousy eyesight. I don't think I should be forced to pay for a pro machine to get a larger screen.
