Isn't the 30 cal 220 kinda blunt? Run the numbers again with the 200 gr 30 cal. That one kills stuff right fast I can attest to that.
That 220 grain semi spitzer bullet is the only one Nosler has when using their online data for heavy bullets of that weight.
We can run other numbers using the same online sources for 200 grain bullets in a 30/06. Nosler gives about 2690 fps maximum muzzle velocity with a Partition. For Nosler's 225 Partition in the .35 Whelen, they show 2800 fps - a bit over 100 fps faster with a bullet 25 grains heavier.
The slightly better BC of the 200 grain .30 caliber doesn't overtake the advantage of the heavier 225 grain .35 leaving the barrel a bit over 100 fps faster until you get out past 500 yards - where few people choosing either caliber are likely to intend to be shooting at game.
At 500 yards the 35 caliber has a bit less than a half inch lesser bullet drop than the 30 caliber, remaining velocity for both is identical, and the 35 caliber has 200 more ft.lbs of remaining energy.
You could argue that the two calibers with those two bullets of the same model from the same manufacturer are ballistic twins out to 500 yards, with a theoretical advantage based on pure numbers going to the 35 Whelen. Then you could bring both SD and momentum values into your numerical comparisons.
Again using Nosler's data, the powder charge to get those results from the two bullets in the two calibers are exactly the same - but the additional weight of the 35 caliber bullet being pushed faster is going to result in more recoil if comparing two rifles of identical weight.
Expansion ratio, generally speaking when comparing a caliber using heavier than the usual bullet weights against another caliber one step up where with similar bullet weights in the groove for that caliber, is on the side of the bigger caliber.
For myself, I've been pretty happy with 168 grain TTSX Barnes bullets in the 30/06 with a 24" and 200 grain TTSX bullets in my Mannlicher stocked 35 Whelen with a 22" barrel. If I am going to be walking through thick brush in our grumbly bear country during hunting season, it doesn't take much to slip in a couple of rounds with heavy bullets in case things get exciting. We're lucky enough to be able to hunt everything from moose, elk and deer along with goats and bighorn sheep here, and those calibers and those bullet weights have been doing fine for me for decades. My 358 Norma Magnum mostly collects dust in the gun safe these days as I seldom feel that I would be better prepared if I had it in hand instead of the slightly ballistically lesser 35 Whelen.
I used to pursue maximum velocities and whatever bullet would give me the flattest ballistic curve back in my greenhorn reloading days in the early 70's. I lost that somewhere along the way after a few years and a few hunting seasons.
I eventually figured out that raw numerical differences usually don't equate to an actual advantage out in the field while hunting.