Joined: Feb 2012
Posts: 19,381
Likes: 5,527
From: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
In theory the cro mo fork, being lighter, uses less steel. If the diameters are the same then this means thinner walls. Which also means more flexibility. Whether this is a good or bad thing remains for you to find out after riding the bike with both forks.
If the dimensions are the same then the handling should be about the same. But if the axle to crown seat or the rake are different then some change in the steering/stability will be present. Again the better or worse will be yours to say.