Much lower is not how I would put it. The substantial lessening of competition is what has been established by case law. Our understanding of it is that it's not supposed to be a significant impact on the competition. It's not supposed to be substantial.
I wouldn't say that the threshold's much lower, but it is lower. I think the proposal is to have no impact on competition. It's a matter of degree.
It's also, or it should be in any case, a bit of a dynamic standard insofar as two small companies that merge to a 5% market share, for example, are not potentially lessening competition even if the 5% market share is changing. However, let's say a company that is at 50% acquires a 5%; that can be a substantial lessening of competition.
It's a contextual standard. There are a lot of criteria in the act to determine if it's substantial. Yes, there would be a difference introduced.