I support equality and would not be against more women in the industry. But every panel, every convention? Lets say this were applied to the Amazing Spiderman panel. Between the director, writers, Spidey, Gwen, Lizard, Aunt May/Uncle Ben, George Stacy (probably the 6 most important characters), that's 7 men, 2 women. Do you just bring women who play extras onto the panel? Tell Martin Sheen and Andrew Garfield to not bother showing up?
There's a good chance that other women worked on the production, but those 9 people at the top are the 9 people that anyone standing in line for 6 hours want to see.
On the flip side, if I were at a panel for AMC's the killing, a show staffed largely by female writers, I wouldn't expect them to shoehorn in men just to make it equal.