Not necessarily. There are *definitely* $200+/hour ER jobs in all of the 3 cities, typically located in public facilities for overnight shifts.
However, if you get into a reputable psych program, you'll soon understand why these jobs have a problem recruiting. The real sweet (and competitive) gigs in psych are not ER gigs. The top 10% of outpatient jobs in psych are comparable to the best lifestyle specialties and make a typical EM job look like a pile of garbage..You can maximize the number of days off AND have 100% choice in when these days off are AND never have to work nights and weekends ever again AND for comparable salary and somewhat higher location independence. You might change your mind when you start residency...
That said, the average hourly rate in EM is higher (~250ish). If you are an average physician in either field, you'll make more money in EM. Perhaps by 20-30% (i.e. lower 200k vs. upper 200k-lower 300k). The lifestyle is still far better and more conducive to "serious hobby" in psych IMHO. You can't really enjoy hobbies when your circadian clock is all kinds of messed up. I've also noticed that at least right now my EM buddies are getting squeezed institutionally, and as junior people in a group they really get a lot of undesirable shifts, and get squeezed to work more (even when they don't want to). So you might get 25 hours a week, you might NOT. Sure you make more $ but the control is rather poor. In psych it's a buyers market. You do whatever you want to do. Employers typically kiss up to you rather than the other way around. This obviously can change in 10 years, but that's the state of the world right now.