Although it hasn't been explained in detail, DTVA seems to be working on the basis that the split is somewhere between 100-150 pax
I am genuniely baffled as to how given they cannot right size their business to a place outwith a particularly niche size of aeroplane, that there can be any hope. "No sorry, your B737-800 has too many passengers, Newcastle is that way!" I mean it's not as if there's a queue beating down their door. This is utter nonsense on stilts which is depressing, the amount of people willing to buy into this ****, even more so.
Basic management requires you to have the facilities to serve the market you strive to operate in. This codswallop about going after a subsection of the market against NCL, MAN, LBA et al and ignoring anything outside that wee niche is unprecedented.