I would agree.
But the thing is... The MBP 15" costs a lot more than the 13". Let's add the high-resolution screen and it costs even more. My budget for a new computer for school was $1,600. I decided to just get the baseline 13", spend the rest of the cash on a sleeve, case, RAM, external monitor and school supplies for the year.
For $120, I bought a 22" 1080p external monitor for editing, writing papers and all the other stuff.
As a college student, I saw the 13" as a better choice for portability. Although a 15" doesn't bother me much more, it makes a slight difference when walking through classes, the parking lot and all that.
They're all fine machines, it just depends on your budget, needs and priorities. The 13" was perfect for my lifestyle, and whoever thinks about buying and MBP should consider that. Instead of just buying it simply cuz its "bigger".