Well, I think he just meant competitors.

Unless it has changed recently, Azure Data Warehouse still retains the data in it's own storage where Amazon Redshift does not. In meaning, you have to constantly read in the data from your S3 buckets everytime you start the service where Azure Data Warehouse retains it always.

The big thing about BigQuery is it operates similar to Azure Data Lake Analytics. They pretty much look and feel the same, but Azure Data Lake Analytics is not restricted to just one service. You can hook it up to Azure Data Lake Store, Azure Data Warehouse, and more. I view it as a beefed up BigQuery where you also only pay for the duration of the query.