The method via which the original RAID was created will indeed be critical. The only relevant article I could find is as follows.
https://kb.paragon-software.com/article/685
Based on the above if hypothetically a Mac was using two drives and Apple's own software RAID was used and then that RAID was formatted as NTFS it would be useable in Windows via BootCamp and also on the Mac via Paragon NTFS. However I would also interpret the above article to indicate that if the RAID was created using Windows itself as a software RAID then the Mac would not be able to read it even via Paragon NTFS. If the RAID was created using a hardware RAID controller you would need to access the drives via the same original RAID controller in order to read them.
There are some hardware RAID controllers in the form of a PCIe card which could be used in a Mac Pro and then via that card and Paragon NTFS you might be able to read the contents.