Why is the leadership in CEE weaker than in Western Europe or the US/Canada?

Leadership can be considered weaker than in Western Europe or Northern America and many points given at why, as per Kristina comment, but nonetheless, a lot of factors show that it is increasing at a greater scale than in per previously mentioned countries therefore and arguable, we could consider that leadership in CEE countries will eventually follow up and reach same or close-by levels of western countries.