Oh, I agree on both counts -- Egypt can't defeat the Turks alone, and a direct conflict is unlikely. OTOH, Egypt will merely be additional to the local forces, and despite recent shortlived successes, Turkey's overextended. Turkey won't accept partition of Libya (it sez here); if Turkey is willing to sustain the GNA, there won't be a resolution of this for the foreseeable, turning it into a generations-long conflict. Expensive. It will cost Turkey in the long run, increasing its isolation from its neighbors. It'll be cool.
Actually Egypt is in quite a bind. It of couse covets Libya and its oil. However it is very concerned about the dam in Ethipia financed by China which will cut the flow of the blue Nile. Egypt sees this dam as an existential threat to its nation. IMHO doubt that Egypt has the military prowness to stop this dam from becoming operational and will become even poorer and more dependent on the Saudis. If Sisi tried to take on Turkey, it would be a disaster and his regime would fall. It will also fall if that dam becomes operational.Water supplies in Egypt will be impaired and agricultural production will contract. 80% of the Egyptian population is rural and they will be even more hard pressed and unhappy. Would not bet on Egypt.