I shot a small hog with the t blade Magnus Stinger and didn't get a very good blood trail despite a solid broadside double lung hit with complete passthrough. I love these heads, and was wondering if the 4 blade version would help cretae better blood trails?

Absolutely. 4 blades cut more flesh than 2 blades and will also leave a larger entrance and exit wound resulting in better blood trails.

Yes, the more blades the more cutting of tissue and less penetration.
But generally with todays bows penetration isn't an issue.

I used to shoot two blade heads for a long while years ago. I switched because of the lack of good blood trails. One thing about two blade heads is quite often the animal doesn't have much of a reaction to the hit, especially if the arrow doesn't hit bone.

But I like multiple blades especially whenI mess up and theshot isn't placed exactly right and I hit to far back.

Happy Hunting
Dan

another thing to keep in mind is that hogs have very thick hide and a lot of fat to their bodies which result in lesser blood, but 4 blades cut more flesh than 2 so 4 should have the better trail but not guaranteed

I've shot all mine w/ 4 blade Stingers this year, and the blood trails weren't difficult to follow.