The A330 does seem more adept to this type of flying than the 787 which has a capacity around the 290-300 mark
When we operate our 787-8’s in SH config they have 345 seats, so not far off an A330. Not sure the plastic jet is the most suitable for many short sectors though. Boeing built them for long haul which is what we use them predominantly for, supplemented with a little short haul in the summer. I assume Jet2 would be the other way around, mainly short haul, with a few longer sectors to New York in the winter.