I'm not a seasoned pro, forgive my naivete', but why would you need two routers attached to a single table?
I was building cabinet doors. The rail and stile router bit set has two separate bits, so I set up one in each router. That way I didn't have to change out the bits.
Also, it just worked out that way. I had the routers, and there was room in the table for two.
Now I have a flush trim bit in one and a 1/8th inch roundover in the other for the projects I am working on. For example, When I cut out a part on the CNC, there are some tabs left that were designed into the file so the piece wouldn't catch on the router bit as it is cut out and ruin it. When the cut is complete, I break away the outer waste, or sometimes cut it away on the band saw, leaving the tabs sticking out from the project. A quick pass on the router trims the remaining waste away. Then I run round over the outer edge and VOILA!, I'm done. Saves a little time vs sanding...and I hate sanding! >
And finally, just lazy, I guess. :surprise: