Certified GKH Gardening Expert
When tomatoes get their true leaves (the second set of leaves the plant grows), they will look like small tomato leaves, which in most cases is the multi-lobed somewhat pointed leaves.
I've never heard of "Gardener's Delight" tomato. If it is an heirloom variety, it may not have the traditional pointy leaves of hybrid tomatoes and some other heirloom varieties. It may have what they call a "Potato Leaf". In this case, it will be harder to tell the difference between it, and other plants. Wait until it grows more leaves. If, after it has 6 to 8 leaves, you still can't tell the difference. pinch off leaves from both plants, crush them in your fingers (separately of course). The one that smells like tomato leaves is your tomato. ;) Good luck!