100% more MICU time.
Surgical/Trauma ICU at most academic centers is usually not ONLY trauma. They put complex post operative spine surgery cases in those units, and other various things that aren't relevant to the practice of emergency medicine. While the surgeons get really excited about their Frankenstein medicine of conduits, anastomoses, and the never-ending quest to place drains in the most weird locations, I find it to be very low yield. The vast majority of post operative care in the ICU is rote, based on check lists and protocols, and from what I have experienced is very much heavily weighted towards good nursing and respiratory care. What an intern/resident is going to do in a SICU is not really going to make that much of a difference. It's all about wound care, physical therapy, etc. I'm sure the EM/CCM people in this forum will likely disagree with me, and I know many of them are trained via the anesthesia pathway and spend a lot of time in the trauma ICU. But that is my n=1 experience. Perhaps other centers are different, but that is how it is my shop.
MICU is much more an extension of emergency medicine. While it's easy to waste time down the rabbit hole of all the intricacies of managing the different types of pulmonary hypertension with a pulm/crit trained attending, it is much more high yield. Sepsis, DKA, bad GI bleeds, bad asthma/COPD, etc is all your bread butter EM resuscitation.
Having rotated in both units, I found that I got way more procedures in the MICU. In the SICU/trauma ICU, most of the patients are coming out of the OR or ED all lined up, intubated, chest tubes in place etc.