I am seeing the same number of folks in both Marketo / SFDC. One note, the Marketo smart campaign cannot see the form for you to select from till someone submits a form on LinkedIn. You will need to create a trigger smart campaign and a batch smart campaign to capture all leads.
What do you mean you are seeing it? I do see it in Marketo and created a smart campaign but it doesnt seem to be working?
Please remember that when a lead is created in Marketo, whatever the creation mechanism, it does not necessarily immediately sync to SFDC.
You need to have some lead lifecycle programs and campaigns that handles the various cases, including this one.
It is NOT recommended to start adding "sync lead to SFDC" all over the place, because one day or another, you will have to evolve your processes and then, you will strongly wish that these workflows are centralized.