In all those tests the bissell big green is shown to clean slightly better than the rug doctor.
Bissell big green vs rug doctor deep clean.
The big green is more comparable in size and functions to the larger rug doctor called the mighty pro x3.
Rug doctor deep carpet cleaner vs bissell big green compares in detail the differences between these deep carpet cleaning machines.
Part of the reason for this may be that the bissell uses a large brush roll where the rug doctor uses a vibrating brush bar.
However as you would notice it is not a total domination and you would notice that in some categories the rug doctor is superior power cord length water tank capacity.
Rug doctor vac offers a lighter body that weighs almost twice less 25 pounds and comes with a longer 28 ft cord.
Click here for that comparison.
Which deep carpet vacuum is more maneuverable.