It goes in cycles. Crush was much more popular in the USA than These Days was, but These Days sold more albums worldwide, so apparantly, some of the global popularity waned for the Crush era. SWW, NJ, and Blaze were all rather big hits in the USA. KTF debuted in the Top 10 and sold around 2 million in the States (same as Crush). Cross Road, or Always as a single, anyway, was MASSIVE in the USA. It was in the Top 10 for six months. Most of the Crush and OWN shows were sold out in the USA, but most of the These Days and KTF shows were not.
The Top 40 US radio market is fickle and trendy. They follow fads. In the past twelve years we've seen grunge, dance, rap, country, angry women, and Latin trends. 2000 turned to more of a mixed bag, and "rock" has made sort of a comeback. Now, who knows how long that will last or what the next trend will be. There will always be radio stations catering only to rock, only to country, only to r&b, but Top 40 changes periodically.
For Crush it seemed that Bon Jovi was just as, if not more, popular in the USA than in other markets. I hope the momentum continues and the huge success they experienced world-wide in the 90's returns. It would be nice if they could be huge globally, don't ya think?
Becky