The truth of the world is that hard work does not guarantee success, a lot of it is luck, and knowing the right people. You can do everything "right" and still not see the results you want.
Also, a lot of people think that if they are a good enough artist, make a good enough comic then success will come so they only work on the "craft". But, if no one knows your work exists then that hard work is not enough. It means you have to work hard, but you have to have a plan and work hard in a variety of different areas.
The first step is always deciding what your definition of success is. If it is merely drawing better, then let that guide your hard work, but if it is being well known, then that takes a different type of hard work.
In creative professions I don't think it is good to compare who works harder. Honestly, someone who is an expert and has years of experience makes it all look easy. That I think is why there is this push back against artists wanting to get paid for their work. Once you try to do something creative that is outside your expertise you realize that it really isn't that easy.
A lot of being a modern creative is knowing how to build a fan base and network with other creatives. You can't just sit back and wait for people to find you, you have to actively work to get yourself out there and that takes a skillset that doesn't come naturally to creatives.