I used to run the 4x100m relay in high school, we won second in our state (a pretty meaningless accomplishment). The relay team is in fact much more than 4 individuals. You have to have exchanges. Exchanges have to be perfectly synced or you can be disqualified. Our relay team practiced together, sat next to each other on the bus, hung out in school, and did lots of other activities to build a camaraderie. We beat many other teams who had faster individual people because we were a much better team. Ultimately, the only reason we lost, is because I botched the hand-off. I was thinking too much about running my fastest leg ever (which I actually did), and not enough about making the perfect exchange. Don't belittle the accomplishment of a relay team. True, you need four of the top people, but you need more than that.