no there is a difference in profile 1.3 and 1.0 spec's
1.3 has higher bandwidth that some of the cheaper cables will NOT handle.
it is not a myth of monster cable, just look up the specs.
what IS a myth of monster cables is that their cables are superior in any way vs the less expensive brands.
a 100 dollar hdmi cable from monster will display on screen exactly like a 10dollar hdmi cable from monoprice/bjc/anyone else
also some of the cheaper cables have crappy connectors- which is usually the problem with the cables, i buy not the cheapest, but the medium grade cables (~10-20 bucks) that
hdmi 1.0 : Single-cable digital audio/video connection with a maximum bitrate of 4.9 Gbit/s.
hdmi 1.3 : Increases single-link bandwidth to 340 MHz (10.2 Gbit/s)
while a 1.0 cable MIGHT be able to handle 10.2Gbit/s it may not since they are only RATED to 4.9Gbit/s
a 1.3 rated Cable WILL handle 10.2 Gbit/s handily.
almost ALL cables on sale now are 1.3 spec.
http://bluejeanscable.com/articles/hdmi-spec-versions.htm
