RVQs and Sidekicks are low-pressure grills. That being said, I have found that my RVQ is hotter than my Sidekick (based on the time it takes to accidentally burn something).
As with most questions of this nature, the truth can be had by measuring. A thermometer will tell you if your intuition is correct.
As for any mods to the system, it is my recall that the quick disconnect on the grill's gas line is not rated for any application other than low pressure. This coincides with what Iwannacamp has stated.
Wright and Penny
2010 Tundra 4X4 5.7L V8
2014 Rockwood 2604WS
Life is a cruel teacher. She gives the test first; the lesson then follows.