The last 3 seasons where Stewart has been fit for the back end of the year Manly has made the GF, winning the last 2. That's not to say he's better than Slater but there's not much between them at their peak.
Smith over Ballin is a no brainer though Ballin is still in the top handful of hookers in the game.
Foran over Widdop.
DCE only has 1 season to go on but in that year he was picked for the Kangaroos, won the Dally M rookie of the year and International Player Awards halfback and rookie of the year. IF he continues his current run of form he would have to be at least equal with Cronk. Defensively I'd take him over Cronk but skillwise they are close to being on par.
Look, I rate Manly's spine very highly, It's number 2 easily...but Smith, Slater and Cronk are
the best in the game in their respective positions (yes, I believe that Cronk is better than Thurston due to his ability to consistently perform at such a high level). + You have Widdop, who IMO showed just as much potential as DCE, he just didn't win the accolades which everyone knows are subjective.
Comparing DCE to Cronk at this stage is just ridiculous. DCE had a very good year yes, but that doesn't hold a candle to the consistent level of quality that Cronk has been able to maintain for years now. It's way too early to be making a judgement on DCE. Yes he has shown he has the skills, but a lot of young halves have a brilliant rookie year but then cannot maintain it (Mortimer for example). Let's have this discussion in 2-3 years when we can really form a proper judgement.
When it all comes down to it:
Slater - Stewart
Widdop -
Foran
Cronk - DCE
Smith - Ballin
Melbourne's spine has Manly's covered in every position other than 5/8 imo...however Widdop is still an unknown entity like DCE at this stage. We need to take what they did in their rookie year at face-value because we've seen so many times with young halves that for all the talent they have, they just cannot maintain it in first grade.
I do think though that Manly's overall squad is better than Melbourne's. Melbourne just has them covered in the spine.