Incoming!
Good catch, don't take everything you read for gospel, it's been my experience that 90% of the garbage you see on the internet is people talking thru their hats. :hehe:
Comparing TS12 47059 to TS12 48249 is simple if you have enough disk space, make a new folder, copy the TS12 folder into that, create a new shortcut and call it "alternate TS12" or something. Now install the patch in one of the copies, and run head to head comparisons - and check that both are set for the same display settings, if you have one set to 1024x768 full screen DirectX and the other is 1280x1024 windowed OpenGL you're not actually comparing anything. If you're running full screen instead of windowed you'll need to go to
www.fraps.com and install that, fire it up so you have a full screen FPS counter. Start one of the built in sessions on a built in route, DO NOT MOVE the train or the camera, wait a minute or two for all the scenery to load, note the framerate. Exit, change to the other TS12 build, follow the exact same steps, note the results. Repeat until bored silly.
TS2010 to TS12 is more difficult, for one thing they have different settings - the train detail slider in TS2010 was replaced by a tree quality slider in TS12, neither one actually does anything as far as I can tell, but to make sure the comparisons are accurate you need to turn up all the sliders to full in both games. And again both should have the same display settings or the results will be skewed.
Other problem is the two games have no built in routes in common - and if I have to explain why comparing the Avery Drexel route in one game to the Norfolk and Western Appalachian Coal in the other game doesn't tell you anything about the performance in either game, you're beyond hope so I'm not even gonna try. For that reason you need to find or create a third party route that will work in both, has no errors in either one to skew the results, and is sufficiently detailed to at least challenge your system limits.
So here's three locations on my WIP route, route and session created in TS2010 build 44088, saved to CDP and imported to TS12 build 48249. Yellow numbers in the upper left corner are the FRAPS frames per second counter.
Under controlled conditions that don't compare apples in Washington to Oranges in Florida the framerates are about the same.
But don't take my word for it, run your own tests to check it out, just make sure you're not deluding yourself by running two completely different experiments and thinking you're actually proving something.