Two interesting tweets from MMA Fighting's Ariel Helwani:
At a media gathering with @CMPunk. He believes if UFC put his debut and Brock's return on the same card it would break UFC's PPV record.— Ariel Helwani (@arielhelwani) March 14, 2015
And if you're wondering, Punk would like to see Lesnar return to UFC when he becomes a free agent in a few weeks.— Ariel Helwani (@arielhelwani) March 14, 2015
Not altogether surprising that Punk would want Lesnar to return to the UFC considering his newfound allegiance to the company but it's likely not going to do much to sway Lesnar's decision making either way.
As for whether they could break the pay-per-view record, well, that's an interesting thought to consider. The current record 1.6 million buys, brought in by the UFC 100 event that saw Lesnar destroy Frank Mir in a heavyweight title unification bout in the main event. That show also featured Georges St. Pierre vs. Thiago Alves for the welterweight title, and came at a time when the UFC was at its hottest.
Could a combination of Punk's debut and Lesnar's return not only hit that mark but surpass it?