Some development statistics for 2.6.26 - and beyond

When I look at "Most active 2.6.26 employers" I see that the Linux companies (RedHat, Novell)
are placed relatively higher when scored by changesets than by number of lines, whereas
"traditional" companies (Intel, IBM) are the other way around. Are Linux companies simply
better at breaking down the patches in small digestable chunks, where as the others develop a
big thing a commit the lot? Or is because the big companies develop large features where as
the Linux companies do much of the bug-fixing?