I don’t think the Windows Partition stuff is competitive.
What many people want is the ability to preserve their data while repartitioning, and also the ability to partition and format as FAT32 & NTFS and maybe convert from one to the other.
Give me third party utilities ANY DAY over the Microsoft stuff. If you don’t want to fork out the dough, yeah, the Windows boot disk version may be ok. But I’d still recommend a third party solution, such as Paragon.