So I compared both the Human Alliance Wreckers from both Takara and Hasbro versions.

I'm sure we all know that the Leadfoot will of course be without the sponsorship but not only that, I just found out that the Takara Leadfoot is painted red instead of just red plastic. It is a glossy red paint. When you put the 2 together, you will see the Hasbro is just dull.

As for Roadbuster, there are only 2 differences and that is the Nascar sticker on the Takara version now saws Nascar Sprint and the logo is completely different. Also the Number 88 on his roof on doors, for the Takara version, has shading. There are white and black outlines around the numbers unlike the Hasbro version which does not have any.

I made a brief video talking about it, check it out if you'd like to see the visual difference.

Takara vs Hasbro Human Alliance Wreckers - YouTube

 

Roadbuster isn't the Takara version, it's a running change

 

What do you mean by "running change"?

The box says Takara on it so I don't know what else one would call it?

 

It's a varient, maybe it looks that way for Takara too, but both can be found outside of Japan

 

he means that the one with the bland 88 was the first release and running change means that the ones coming out now and found at stores in the usa have the new 88 design and sprint logo.