Yea, I've personally experienced this with the OneDrive.
With Dropbox, transferring photos from my phone to PC is completely automatic.
With the OneDrive, I have to log onto the OneDrive website, select the photos that I sent from my phone, and then select download to my PC. (and yes I have the OneDrive app on my PC). These extra steps completely eliminate the convenience factor.
And if there is a way to automatically transfer photos from my phone directly to my PC hard drive, I haven't been able to find the setting for it.