Please correct me if I'm wrong, but you say...
> Even though [Nango] seem to have more integrations
Nango has north of 100 integrations, Revert seems to have 4 atm?
> our integration support is better than them in terms of the depth of use-cases allowed (more standard objects supported, custom properties, field mapping support, custom objects (soon) etc).
How so?
Nango Sync gets you easy access to the raw API responses from the 3rd party service, and lets you map that to whatever shape/model you, as the implementer, want to end up with.
Revert seems to return standardized/normalized objects per data model (e.g, company, contact, task) across the 4 different integrations currently mentioned. It also seems to support "custom mapping" past the "lowest common denominator" schema, by adding `sourceFieldName` -> `targetFieldName` mappings (but seemingly only for picking out response key if they're strings, not any "pick from object", or "compute based on multiple properties"?)
Please don't take this as discouragement -- it's a great space to play in, and there's a lot of room for improvement. But, as a _very_ happy user of Nango over the past 10+ months, I feel you should compare yourself honestly at the very least.
Good luck!