strong on
1. Very skilled at or proficient in. Public reaction to the debates generally agreed that the Republican candidate was strong on foreign policy issues, while the Democratic candidate was stronger on domestic issues.
2. Containing or possessing a large amount of; overabundant in. The government so far has been strong on media-friendly catchphrases, but light on any meaningful action.
strong on
1 good at; expert in. 2 possessing large quantities of; rich in.