I was referring to easily obtainable factory loadings by Remington, both with 200 gr pills. Handloading they come out close with an advantage to the 35 Whelen.
And in myloading manuals the nod does goto the 35 Whelen. But the difference is slight, and only appreciated by handloaders. That's why I recommended the 35 Whelen even though I said the 350 outclasses it. I should have been clearer that i was referring to facrtory stuff.

My point was that the 35 Whelen is the way to go if you wanted to appreciate the difference in handloading and what advantage it'll give you.... easier to obtain and cheaper brass, and slightly better performance to boot, but only if you plan on handloading.

But in the Remington factory offerings the 350 has slightly higher velocities.

http://www.remington.com/Products/Ammunition/Ballistics/comparative_ballistics_results.aspx?data=R35WH1*R3 50M1