One batter, weighed equally between two identical pans, and baked for the exact same time to the exact same internal temperature, in two different countertop ovens. The interior of the cake (the crumb) is the same but the tops and the exterior are markedly different. (Note: The top of the cake in the Breville is browner but the exterior is less brown.)
No two ovens bake exactly the same. All ovens, except for those with circulating trays, will have some hot spots. Convection ovens tend to bake more evenly but still have hot spots. I rotate my cakes half-way around after two-thirds of the estimate baking time except if they are sponge type cakes such as génoise or chiffon that will fall if moved before they finish baking. In the Breville, if a recipe calls for 350°F/175°C I use 340°F/170°C. In the Panasonic, if it's a small cake or a pie I don't lower the temperature but for a large cake that requires more than 1 hour of baking time, such as a honey cake, which starts browning too fast, I lower the temperature to 325°F/160°C after the first 30 to 45 minutes of baking. When you get a new oven, try baking a familiar cake. I use my all-occasion downy yellow cake from The Cake Bible. Get to know your oven and you can adjust accordingly.