A 2-week recovery is impossible. Minimally invasive or not, complete recovery from a knee replacement is going to take a full year, although you will be able to do most things by about 3 months.
Some of the "minimally invasive" surgeries may appear to give a faster recovery in the first few weeks, as sometimes there is less disturbance to the soft tissues. However, this initial fast improvement almost always slows down and the total recovery time is usually not shortened.
After all, how can you expect to recover as fast as two weeks from a surgery where (even if "minimally invasive") your skin is cut open, your soft tissues are pulled aside, your kneecap is turned over, the ends of two large bones are sawed and shaped, then two large metal parts are pushed into those bones. Then your knee compartments are sewn up again, your kneecap is turned back the right way, your soft tissues are put back in place, and several layers of fat and skin are sewn back together.
All of that causes more trauma than breaking a bone. Would you expect to recover from a broken bone in just two weeks?
Incidentally, "minimally invasive" does give a false impression of what actually happens. No matter that the incision is slightly smaller or a slightly different approach is used, all those things I mentioned still have to happen and the incision has to be large enough to allow for the insertion of two large metal parts and the use of instruments to place them accurately. It isn't keyhole surgery at all.
Now, you may be one of the lucky ones whose recovery goes smoothly and who has a recovery that seems to progress a little faster, but I think it's more realistic to go into surgery expecting recovery to be a long haul, but worth it in the end.