I am not up on the panel technology but looking at the
specs for the 200W panel
Seems lots of online sellers sell the same panel.
It also appears to be about 1480 X 670 mm or .99 square meters
and the
q cells appears to be 2462 X 1144 or 2.82 square meters
200 / .99 = 202 W/m2
600/ 2.82 = 212 W/m2
So if I did the math right and data sheets are correct they are similar output per area.
price wise though a commercial panels look to be about $475 per panel or 80 cents a watt.
The 200W panels are sold for $239 individually or $1.20 per watt
I did not pick apart the price of the bundled kit so the may cost less as part of whatever kit the OP bought.