Zillich Tarot and Thoth

I'm working my way through the Zillich tarot deck, and only have the LWB for reference.

I've read that the Zillich tarot is "Thoth Inspired". My question is How Closely does the Zillich deck follow Thoth tarot?

I've gotten e-samples of various Thoth books from Amazon, and it's a weighty subject. I'd hate to plod through a thoth guide only to learn Zillich is very lightly Thoth inspired.

Thanks for your input!