A SAR aircraft has to have good stability as many landing sites are not level!!
Good job both aircraft will have a dual hoist fitted!!!
I would hazard a guess that both bidders took sloping ground limits into consideration when selecting their chosen platform.
I also suspect that the MCA & MOD may also give this element of the aircraft's performance suitable weighting in deciding who should be chosen to provide the contract.
The SAR-H IPT issued a substantial requirements document, and despite what some people on this forum may think, the Project Team are not one big troop of baboons
!