There is, they can't create new ideas like humanity can. AGI should be able to replace humanity in terms of thinking, otherwise it isn't general, you would just have a model specialized at reproducing thoughts and patterns human have thought before, it still can't recreate science from scratch etc like humanity did, meaning it can't do science properly.
Comparing an AI to a single individual is not how you measure AGI, if a group of humans perform better then you can't use the AI to replace that group of humans, and thus the AI isn't an AGI since it couldn't replace the group humans.
So for example, if a group of programmers write more reliable programs than the AI, then you can't replace that group of programmers with the AI, even if you duplicate that AI many times, since the AI isn't capable of reproducing that same level of reliability when ran in parallel. This is due to an AI being run in parallel is still just an AI, an ensemble model is still just an AI, so the model the AI has to beat is the human ensemble called humanity.
If we lower the bar a bit at least it has to beat 100 000 humans working together to make a job obsolete, since all the tutorials etc and all such things are made by other humans as well if you remove the job those would also disappear and the AI would have to do the work of all of those, so if it can't humans will still be needed.
Its possible you will be able to substitute part of those human ensembles with AI much sooner, but then we just call it a tool. (We also call narrow humans tools, it is fair)