As always with Merlin it ends up in a p**sing contest against Lynx. They are 2 very different aircraft. As an airborne sensor the Merlin can't be beat (stand fast ASAC AEW) with the cost to run and crew involved. The Lynx is limited by its engines in hot weather (predominately where they are operating) however as a rapid reaction, easily deployable weapon asset it also can't be beat.
Put the 2 aircraft together in operations and I believe you have a very capable combination able to deal with most threats.
What you need is for IPT's to start talking o the Operators and buy useful kit that doe not take an age to procure. Whatever your opinion on SCMR is, I believe it is not the best aircraft we could spend the money on but will give the Navy a credible ASuW force. For what its worth NH-90 is proven and available to buy now.