WCPP is a very interesting transition area, its has a bit of everything but is guided by its influence from the prairies.  So a little more arid than Q - yes, I'd agree with that.
WCP and surrounding area has the highest incidence of fire starts due to lightning that anywhere else in Ontario - or so I've read.

We do have some red pines but they are few.  Underbrush inot as thick - again in general i would agree. Thick underbrush is usually associated with a deeper more productive soil. In WCP that condition aligns closely with major water systems.  Deeper soils found in the park away from the major water systems are usually sand deposits. A good example of that is the "enchanted forest " north of Wanda Lake.