By comparison using published numbers from Janes.
You might want to reconsider your remarks.
A318 MTOW 150,000 PAX 72 (1 class) Range 3100 nm Max. Alt. 41,000 ft.
190 EJet MTOW 114,200 lbs PAX 114 Range 2450 nm Max. Alt. 41,000 ft.
RJ100 MTOW 93,000 lbs. PAX 112 Range 1570 nm Max. Alt. 31,000 ft.
CS100 MTOW. 134,000 lbs. PAX 125-130 Range 3100 nm Max. Alt. 41,000 ft.
I believe London City has a runway weight limit of 115,000 lbs. it's also worth pointing out Swiss pitched the RJ100 in favour of the CS100.
I'm sure operational considerations go beyond a single airport such as LCY.
Willie
