Well, Aquaman is extremely dehydrayed here, so hes at his weakest. He has tanked shots from Superman, hence his Large Country level durability. Meanwhile, Spongebob has been ripped to shreads and lived. Aquaman has better durability and Spongebob has better Regenerationn. We can assume that Aquamans speed possibly scales to Superman, whom at his slowest kept up with Green Arrow, being Supersonic. Sopngebob, while wearing the Quickster suit, is Subsonic at best. Now before you bring up that SpongeBob scales to Patrick who ran to the sun and back in 14 seconds, thats a lie. Patrick mightve not ran all the way. Assuming he covered 5/8 the distance imo, Patrick is still fast, being at least FTL. But wait! Superman has crossed galaxies in seconds making him MFTL! So yeah. Both are equal in Attack, and while Spongebob may have a regen advantage, Aquaman is faster and more durable, making him a tough nut to crack. He is even possibly smarter than Spongebob depending on the episode of Spongebob. Though, since Aquaman is at his weakest state, he cant harm Spongebob due to the fact that he survived the destruction of Bikini Bottom, a Wall level durability feat. At the same time, Spongebob has absolutely NO way of harming Aquaman, due to him being able to tank Supermans attacks. While this depends, if Spongebob is allowed to have the Magic Pencil, then My vote goes to Spongebob. If not, then Inconclusive.