I don't know, but that's an interesting observation!

Are you sure it's the same rose?...

No I would not expect to see any difference in foliage with own root vs. grafted. The foliage should be exactly the same.

Is there an age difference ?

I'm wondering if the own-root one is chlorotic. It just doesn't look happy. If the rootstock is better adapted to the soil pH, or some other soil condition, there can easily be a difference between an own-root and a grafted rose.

Madgallica could that also cause matte vs shiny ?

Did the own root come from a very shady spot? Is it the own root one the only one you moved? I have own root Johann Strauss (which has shiney leaves) and grafted Johann Strauss in the same bed, side by side, and they are identical.

All 10 roses in this bed are identical.

I agree with Mad Gallica. The rose on the right is not happy. The rose looks as if it came from low light. Like it was grown in a greenhouse and didn't get enough sun, or it isn't getting the proper nutrients.

Rebecca

I'm still confused by glossy vs matte foliage though?

They were both grown in the same soil and in full sunlight. The own root isn't chlorotic. I had them both about three years and the own root one blooms and thrives as much as the grafted one. I find the difference rather odd to say the least.

When I say glossy or matte I mean that ones leaves are very shiny whereas the others leaves are very dull no shine to them at all and a very soft velvety texture to them

No I'm not confused about that, I'm confused about how chlorosis would change the texture of the foliage.

Is the shape the same? Are the stipules the same? What about the margin, is it the same or does one have more ridges than the other? Also does the underside of the leaflets appear to be different? Are the buds exactly alike?

Everything is exactly the same with the leaves and buds except the grafted ones leaves are bigger. And the strange texture and color difference.

I'm growing pin oaks at or above their pH tolerance. Compared to pin oaks in more acidic condition, their leaves are slightly lighter, noticably thinner, and noticably less shiny. The entire texture and substance of the leaves is just a bit off. I think something like that is what is going on here. I'd want a fairly intensive analysis of Jude's parentage to say definitely that is the problem, and Austin considers breeding a trade secret, but I still think that is what is going on.