I’m a collector car owner and yes, both are similar... (I’m using the Mother’s myself since I already had it). I asked what they recommend and Jim’s Sweetie Mary showed me the Meguiar’s at the shop when I picked up my S3 Encores. Both are the watery polish type as opposed to the oily type that like, say a Turtle Wax “Ice” is... so just don’t use “any” detailer, they’re not all are the same.
JD