Affiliate Marketing involves less work compared to Dropshipping. As far as making more money from Dropshipping I think that is open to debate and depends of your cost. Before people buy from your store you need to spend in building a brand. An affiliate marketer do not have to worry too much about that because the merchant he/she is selling for has probably taken care of that.
All CPA marketers put their eggs in one basket. I’ve seen plenty of the greats go from zero to hero and vice versa several time in their careers. The smart ones learn to build their own business in the process and pimp their products to CPA newbies (where the real money is). So if your only focus is to make the most money you can I would advise you not to spend it all because that business model won’t last.
Focus on reviewing products that fall within your niche. Then, leveraging the rapport you have created with your audience and your stance as an expert, tell your readers why they would benefit from purchasing the product you are promoting. It is especially effective to compare this product to others in the same category. Most importantly, make sure you are generating detailed, articulate content to improve conversions.