Nope
The first ‘program’ you wrote is a ‘constructor’, the second is a custom object;
As stated in the challenge: In a constructor the this variable refers to the new object being created by the constructor.
You will use it as follows:
let test = New motorbike();
console.log( test.wheels) // result 3
`
The second one is an object: you use it to store and manage data.
That is one of the effect if i understand what you mean.
The constructor is something like a ‘mould’: you use it to produce ‘istances’ ( the objects you ‘produce’ with that mould) ; a simple object is something ‘handcrafted’.
The differences between these two ways to create an object are the same of the factories counterpart : you will go for an handcrafted item when you want something full customizable and not to be ‘rebuilded’, a constructor is preferred to be defined when you need to produce more than one item ( or if you plan to do so, or if you want to implement a structure ‘potentially’ reusable etc…)
This is my opinion, if i said something wrong please correct me; if someone would add something it would be good since there are a LOT of stuff behind that ( constructors could be considered as one of the main components of the classes, which are the bases of the OOP approach).