[APP][Pro] Magic Home LED

I’ve got a silly question, I have some 5-meter-long 5050 60 led/meter (12V) led strips RGBWW (actually 30 color and 30 WW it seems)., the specs say 14,4W per meter, which I thought was a bit much, but hooked it up with a Magic Home Led controller and a 6A power supply, works perfect, but with WW I only use 18W for 5 meters and in color 9W max in total (5 meters)

Now the interesting question…are the specs (and lots of websites wrong with the 14,4W (or 7.2 since it’s only 30 on at a time) per meter, or is this in some way due to the Magic Home controller not delivering full power, LEDs seems quite bright.
(tried multiple LED strips and multiple controllers, but the results are the same)

And if it’s indeed only using <20W per 5 meters and the controller is rated at 96W, would it be 100% safe to hook up 15M (3 strips) to 1 controller, or better not do that? Also, can a 2A power supply be used for a 5-meter ledstrip (I would think so, or am I wrong?