I think "pretty popular" may be in the eyes of the beholder. In April, Titans #22 sold about 29,000 copies (29,018 copies) through Diamond.
Compare that to Green Lanterns (#44 and #45), which sold a little over 24,000 copies for each issue (24,528 copies and 24,173 copies).
Haven't you been complaining that, based on sales-numbers, the Jessica & Simon title has been a failure (or something to that effect)?