This article backs up Ragz’s point from our last podcast about H1-B sponsors flooding the lottery trying to get cheap labor for engineering slots.
US-based companies like Apple, Microsoft, Google are paying significantly more than Indian-based companies like Cognizant and Tata for H1-B visa holders. May be just because the US-based companies are subcontracting out a lot of work. So though they look better on paper in terms of pay to H1-B holders, this may not bear in reality.