The ability to do so, yes. The points, no. What you actually get is an unsupported battle line, without the escorts to cover, herd, pick off smaller enemies, stage diversion runs, snap up weakened enemy ships of the line, all those things that an escort shell of Artemis and Olympus used to be capable of.
All the stress gets dumped straight on to the larger ships. Case in point; the Chronos. High hull, low damage and crew, good all round weapons. It's a heavy destroyer, tactically speaking- with a screen of lighter escorts to pave the way for it, it can move where it chooses, avoid the heavy weapons that would blow straight through it's armour, accept fire from secondaries that it's interceptors and heavy hull can take tolerably well, and kill enemy escorts and maim larger warships with it's all round gun fit.
As part of the SFoS fleet structure, with a little luck, it could punch well above it's weight. Now, it has to do the job of those light escorts, and it's simply too much ship for it. It's not efficient in the role, it draws more fire and dies a lot faster than usually used to be the case.
Similar problem with the Marathon. As an individual fighting ship, it's good verging on superb. As a fleet element, I have difficulty making it reach it's full potential because it needs a support squadron, with decent numbers of medium weapons to brush off enemy light hunter types and finish off the ships it damages- and that support squadron doesn't exist any more.
I think the phrase we're looking for is 'a$$ hanging out in the breeze.' The Tourney Warlock was one of the minority of War- level ships that could deal effectively with a large number of small enemy ships, along with the Mankhat and Octurion, and probably was the best of the three at dealing with enemy ships it's own size as well. It's the closest...well, joint closest (nearly denied the glory of the Targrath there) I think the lists hold to a genuine go anywhere, do anything universal warship. That could be why Mongoose chose not to retain it at War- too easy an answer to the selection question.