Easiest way to look at it (which is a huge stereotype), but:
There are the 'new age' buggies... Durango, Agama, Serpent, XRAY, JQ, Losi, etc.
Then there are the 'tradionalist' buggies... Koyoshi, Associated, HPI/HB, Ofna, Mugen, etc.
The 'tradionalist' buggies aren't inferior in any way. Called that because they are revisions, improvements, and redesigns of previous versions. They're stable platforms that are predictable. Tried and true methods.
The 'new age' buggies are complete redesigns that have their own unique qualities to them. They can be finicky to tune, but super fast if it's nailed right.
Each category tends to copy one another in some way shape or form.
Flood gates: open.
